org.mapstruct

Annotation Type MappingTarget

@Target(value=PARAMETER)
 @Retention(value=CLASS)
public @interface MappingTarget

Declares a parameter of a mapping method to be the target of the mapping.

Not more than one parameter can be declared as MappingTarget.

NOTE: The parameter passed as a mapping target must not be null.

Example 1: Update exist bean without return value

 @Mapper
 public interface HumanMapper {
     void updateHuman(HumanDto humanDto, @MappingTarget Human human);
 }
 

 // generates
 @Override
 public void updateHuman(HumanDto humanDto, Human human) {
     human.setName( humanDto.getName() );
     // ...
 }
 

Example 2: Update exist bean and return it

 @Mapper
 public interface HumanMapper {
     Human updateHuman(HumanDto humanDto, @MappingTarget Human human);
 }
 

// generates:

 @Override
 public Human updateHuman(HumanDto humanDto, Human human) {
     // ...
     human.setName( humanDto.getName() );
     return human;
 }

Author:

Andreas Gudian